angiotonin vs angiotensin

angiotonin and angiotensin both are nouns.

Word	Noun	Adjective	Verb	Adverb
angiotonin	Yes	No	No	No
angiotensin	Yes	No	No	No

As nouns, angiotonin and angiotensin are synonyms defined as:

angiotonin and angiotensin: any of several vasoconstrictor substances (trade name Hypertensin) that cause narrowing of blood vessels

Other synonyms of angiotonin include Hypertensin.

angiotonin (noun)	angiotensin (noun)
any of several vasoconstrictor substances (trade name Hypertensin) that cause narrowing of blood vessels	any of several vasoconstrictor substances (trade name Hypertensin) that cause narrowing of blood vessels